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Anwar S, Khalique A, Hifzulrahman, NaeemTahir M, Azam BE, Tausif MA, Qamar S, Tahir H, Tipu MA, Haque MNU. Effects of prilled fat supplementation in diets with varying protein levels on production performance of early lactating Nili Ravi Buffaloes. Anim Biosci 2024; 37:1387-1397. [PMID: 38665070 PMCID: PMC11222859 DOI: 10.5713/ab.23.0543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/24/2024] [Accepted: 04/01/2024] [Indexed: 07/05/2024] Open
Abstract
OBJECTIVE The objective of the current study was to find out the independent and interactive effects of prilled fat supplementation with protein on the production performance of early lactating Nili Ravi buffaloes. METHODS Sixteen early lactating buffaloes (36.75±5.79 d in milk; mean±standard error) received 4 treatments in 4×4 Latin-square design according to 2×2 factorial arrangements. The dietary treatments were: i) low protein low fat, ii) low protein high fat, iii) high protein low fat, and iv) high protein high fat. The dietary treatments contained 2 protein (8.7% and 11.7% crude protein) and fat levels (2.6% and 4.6% ether extract) on a dry matter basis. RESULTS The yields of milk and fat increased with increasing protein and fat independently (p≤0.05). Energy-, protein-, and fat-corrected milk yields also increased with increasing protein and fat independently (p≤0.05). Increasing dietary protein increased the protein yield by 3.75% and lactose yield by 3.15% and increasing dietary fat supplies increased the fat contents by 3.93% (p≤0.05). Milk yield and fat-corrected milk to dry matter intake ratios were increased at high protein and high fat levels (p≤0.05). Milk nitrogen efficiency was unaffected by dietary fat (p>0.10), whereas it decreased with increasing protein supplies (p≤0.05). Plasma urea nitrogen and cholesterol were increased by increasing protein and fat levels, respectively (p≤0.05). The values of predicted methane production reduced with increasing dietary protein and fat. CONCLUSION It is concluded that prilled fat and protein supplies increased milk and fat yield along with increased ratios of milk yield and fat-corrected milk yields to dry matter intake. However, no interaction was observed between prilled fat and protein supplementation for production parameters, body weight, body condition score and blood metabolites. Predicted methane production decreased with increasing protein and fat levels.
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Affiliation(s)
- Saba Anwar
- Buffalo Research Institute, Pattoki District Kasur, 53000,
Pakistan
| | - Anjum Khalique
- Department of Animal Nutrition, University of Veterinary and Animal Sciences, Lahore 54000,
Pakistan
| | - Hifzulrahman
- Department of Livestock Production, University of Veterinary and Animal Sciences, Lahore 54000,
Pakistan
| | - Muhammad NaeemTahir
- Department of Livestock Management, Faculty of Veterinary and Animal Sciences, The Islamia University, Bahawalpur 63100,
Pakistan
| | - Burhan E Azam
- Livestock Experiment Station, Bhunikey, Pattoki, District Kasur, 53000,
Pakistan
| | - Muhammad Asim Tausif
- Livestock Experiment Station, Bhunikey, Pattoki, District Kasur, 53000,
Pakistan
| | - Sundas Qamar
- Buffalo Research Institute, Pattoki District Kasur, 53000,
Pakistan
| | - Hina Tahir
- Buffalo Research Institute, Pattoki District Kasur, 53000,
Pakistan
| | - Murtaza Ali Tipu
- Department of Livestock and Dairy Development, Lahore 54000,
Pakistan
| | - Muhammad Naveed ul Haque
- Department of Animal Nutrition, University of Veterinary and Animal Sciences, Lahore 54000,
Pakistan
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Binyameen M, Khan MIR, Haque MNU, Tausif MA, Kok A, van Knegsel ATM, Tahir MZ. Effect of prepartum dietary energy sources on productive and reproductive performance in Nili Ravi buffaloes. Trop Anim Health Prod 2023; 55:88. [PMID: 36808487 DOI: 10.1007/s11250-023-03510-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 02/11/2023] [Indexed: 02/21/2023]
Abstract
Feeding of dietary energy sources has been extensively studied in dairy cows but not well described in dairy buffaloes. The objective of this study was to evaluate the effect of prepartum dietary energy sources on productive and reproductive performance in Nili Ravi buffaloes (n = 21). The buffaloes were offered isocaloric (1.55 Mcal/kg DM NEL (net energy for lactation)) glucogenic (GD), lipogenic (LD), and mixed diet (MD) during 63 days prepartum and maintained (1.27 Mcal/kg DM NEL) at lactation diet (LCD) during 14 weeks postpartum. Effects of dietary energy sources and week on animals were analyzed with the mixed model. The DMI, BCS, and body weights remained similar during the pre- and postpartum periods. The prepartum diets did not affect birth weight, blood metabolites, milk yield, and composition. The GD tended to early uterine involution, more follicle numbers, and early follicle formation. The prepartum feeding of dietary energy source had a similar effect on first estrus expression, days open, conception rate, pregnancy rate, and calving interval. So, it could be concluded that prepartum feeding of an isocaloric dietary energy source had a similar effect on the performance of buffaloes.
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Affiliation(s)
- M Binyameen
- Buffalo Research Institute, Pattoki, District Kasur, 55300, Pakistan
| | - M I R Khan
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - M N U Haque
- Department of Animal Nutrition, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - M A Tausif
- Livestock Experiment Station Bhunikey, Pattoki, District Kasur, 55300, Pakistan
| | - A Kok
- Adaptation Physiology Group, Wageningen University and Research, 6700, AH, Wageningen, The Netherlands
| | - A T M van Knegsel
- Adaptation Physiology Group, Wageningen University and Research, 6700, AH, Wageningen, The Netherlands
| | - M Z Tahir
- Department of Theriogenology, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan.
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Chikkagoudara KP, Singh P, Bhatt N, Barman D, Selvaraj R, Lathwal SS, Singh SV, Choudhary S, Uddin J. Effect of heat stress mitigations on physiological, behavioural, and hormonal responses of Buffalo calves. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2022; 66:995-1003. [PMID: 35124759 DOI: 10.1007/s00484-022-02255-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 12/27/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
This study assessed the effect of heat stress mitigations on the physiological, behavioural, and hormonal responses of buffalo during the hot summer season. Twenty Murrah buffalo male calves were distributed randomly into controlled (C, n = 10) and treatment groups (T, n = 10). The buffalo calves in the C group were housed in the existing shed (10-12-ft height and 10-ft width). Buffalo calves of the T group were allocated in the modified shed: 15-ft height and 20-ft width along with time-controlled pressure mist with fans and rubber mats on the floor. Fans were running all days. The cool water was misted on calves at the rate of 1 min in 5 min, from 11:00 to 18:00 h. The water misting system was installed below the roof, but at 3.5 m above the floor. The calves' body weight, rectal temperature, infrared temperature of the eye, blood samples, respiration rate, and pulse rate were recorded fortnightly for two consecutive months. In one-way ANOVA, rectal temperature, eye temperature, cortisol level, and afternoon's respiration and pulse rate were higher in the calves of C group than that of T group (P < 0.05). Conversely, eating and resting time (min/day) and triiodothyronine were lower in the calves of C group than that of T group (P < 0.05). Therefore, an increase in shed's height and width, using rubber mats on the floor, and cool water misting to buffaloes during the hot summer seasons positively influence their physiological, hormonal, and behavioural responses.
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Affiliation(s)
- Kotresh Prasad Chikkagoudara
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India.
- University of Agricultural Sciences, RaichurRaichur, Karnataka, India.
| | - Pawan Singh
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Ninad Bhatt
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Deepandita Barman
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Ragulraj Selvaraj
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Surender Singh Lathwal
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Sohan Vir Singh
- Division of Animal Physiology, ICAR - National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Sanjay Choudhary
- Division of Livestock Production Management, ICAR- National Dairy Research Institute, Karnal, 132 001, Haryana, India
| | - Jashim Uddin
- Centre for Animal Welfare and Ethics, School of Veterinary Science, University of Queensland, Gatton, QLD, 4343, Australia
- Department of Veterinary and Animal Sciences, University of Rajshahi, Rajshahi, 6205, Bangladesh
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Mohd Azmi AF, Ahmad H, Mohd Nor N, Meng GY, Saad MZ, Abu Bakar MZ, Abdullah P, Jayanegara A, Abu Hassim H. Effects of Concentrate and Bypass Fat Supplementations on Growth Performance, Blood Profile, and Rearing Cost of Feedlot Buffaloes. Animals (Basel) 2021; 11:ani11072105. [PMID: 34359233 PMCID: PMC8300348 DOI: 10.3390/ani11072105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 06/17/2021] [Accepted: 06/17/2021] [Indexed: 01/11/2023] Open
Abstract
Simple Summary Studies have shown that providing concentrate and bypass fat as feed supplements resulted in better performance of large ruminants. However, there is limited information about the effects of these supplements on the performance of buffaloes. This study evaluates the effects of concentrate and bypass fat supplementations on the growth performance, blood metabolites, and feeding cost of Murrah cross and Swamp buffaloes. Following diet supplementation, the feed intake, body weight, and body condition score were significantly improved without any side effects on the blood metabolites of both buffalo breeds. Although the mixture of concentrate and bypass fat supplement (26:4) used in this study was found to increase the cost of feed, overall, it resulted in a greater return. Abstract This study investigates the effects of supplementation of the basal diet with concentrate and rumen bypass fat on the dry matter intake (DMI), growth performance, blood metabolites and hormonal changes, and the feeding cost of feedlot water buffaloes. Thirty-six healthy, three- to four-month-old male Murrah crossbred (n = 18) and Swamp (n = 18) buffaloes with a similar average initial body weight of 98.64 ± 1.93 kg were each randomly allocated into three dietary experimental groups. Buffaloes were fed with Diet A, which consisted of 100% Brachiaria decumbens, Diet B, consisting of 70% Brachiaria decumbens and 30% concentrate, and Diet C, consisting of 70% Brachiaria decumbens, 26% concentrate, and 4% rumen bypass fat for a period of 730 days. Feed intake was measured daily, while blood samples were collected for every eight months. Furthermore, body scores were noted prior to and at the end of the experimental period. The results showed that the average daily gain for buffaloes fed with Diet C was the highest. The DMI, BCS, FI, and FCR for the three groups showed significant (p < 0.05) differences, in the following order: Diet C > Diet B > Diet A. At the end of the two-year feeding trial, buffaloes fed with Diet B had significantly (p < 0.05) higher cholesterol levels than Diet A and Diet C. In addition, buffaloes fed with Diet C had significantly (p < 0.05) higher levels of serum total protein, growth hormone, and insulin-like growth factor-I hormone compared to Diet A and Diet B. On the other hand, buffaloes fed with Diet B and Diet C showed significant (p < 0.05) decrease in glucose levels. Supplemented diet improved the buffalos’ weight gain to achieve the market weight in a shorter period of time, thus, giving farmers a greater return. In conclusion, concentrate and bypass fat supplementations in the diet of water buffaloes improved the growth performance without adverse effect on the blood metabolites, which enabled better farmer profitability.
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Affiliation(s)
- Amirul Faiz Mohd Azmi
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
| | - Hafandi Ahmad
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
| | - Norhariani Mohd Nor
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
| | - Goh Yong Meng
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
| | - Mohd Zamri Saad
- Department of Veterinary Laboratory Diagnosis, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia;
| | - Md Zuki Abu Bakar
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
| | - Punimin Abdullah
- Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu 88400, Malaysia;
| | - Anuraga Jayanegara
- Animal Feed and Nutrition Modelling (AFENUE) Research Group, Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia;
| | - Hasliza Abu Hassim
- Department of Veterinary Preclinical Sciences, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia; (A.F.M.A.); (H.A.); (N.M.N.); (G.Y.M.); (M.Z.A.B.)
- Animal Feed and Nutrition Modelling (AFENUE) Research Group, Department of Nutrition and Feed Technology, Faculty of Animal Science, IPB University, Bogor 16680, Indonesia;
- Laboratory of Sustainable Animal Production and Biodiversity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, UPM, Serdang 43400, Malaysia
- Correspondence: ; Tel.: +60-39769-3417
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The Impact of Feed Supplementations on Asian Buffaloes: A Review. Animals (Basel) 2021; 11:ani11072033. [PMID: 34359160 PMCID: PMC8300117 DOI: 10.3390/ani11072033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/21/2021] [Accepted: 06/03/2021] [Indexed: 12/21/2022] Open
Abstract
Simple Summary Apart from feeding with forages, dietary supplementation with concentrate and rumen bypass fat is one of the feeding strategies to enhance nutrient availability and improve buffalo performance and productivity. This review paper thoroughly discussed the utilization of concentrate and bypass fat as dietary supplementation in buffalo feeding, and discussed the effects on performance, fermentation characteristics and general health of buffaloes to give better insight about the potential and challenges of dietary supplementation in buffalo diet. Based on the literature studies, it can be summarized that supplementation of concentrate and bypass fat in buffaloes may overcome the nutritional problems and improve the growth performance, health status, rumen environment and carcass traits. Abstract With the increase in the global buffalo herd, the use of supplementation in the ruminant feeding has become an important area for many researchers who are looking for an isocaloric and isonitrogenous diet to improve production parameters. In order to improve the performance of the Asian water buffalo, the optimal balance of all nutrients, including energy and protein, are important as macronutrients. Dietary supplementation is one of the alternatives to enhance the essential nutrient content in the buffalo diet and to improve the rumen metabolism of the animal. Researchers have found that supplementation of concentrate and rumen bypass fat could change growth performance and carcass traits without causing any adverse effects on the buffalo growth. Some studies showed that dry matter intake, body condition score and some blood parameters and hormones related to growth responded positively to concentrate and rumen bypass fat supplementation. In addition, changes of feeding management by adding the supplement to the ruminant basal diet helped to increase the profit of the local farmers due to the increased performance and productivity of the animals. Nevertheless, the effects of dietary supplementation on the performance of ruminants are inconsistent. Thus, its long-term effects on the health and productivity of buffaloes still need to be further investigated.
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Effect of bypass fatty acid and Tinospora cordifolia supplementation on production performance and milk fatty acid profiling in Murrah buffaloes (Bubalus bubalis). Trop Anim Health Prod 2021; 53:383. [PMID: 34195883 DOI: 10.1007/s11250-021-02831-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 06/18/2021] [Indexed: 10/21/2022]
Abstract
Buffaloes contribute about 49% of total milk production and are considered as major milk-producing animals in India. During the early stage of lactation, mostly high producing animals suffer from negative energy balance (NEB) due to imbalance between the needs and availability of energy, and this NEB has a negative impact on production and health of buffaloes. Taking this into consideration, a study was conducted at National Dairy Research Institute, Karnal on 20 freshly calved healthy Murrah buffaloes (Bubalus bubalis). Buffaloes were grouped depending on their previous milk yield, body weight, and parity as T0 (control), T1 (fatty acids), T2 (Tinospora), and T3 (mix) groups having five animals each. Supplementation of 150 g of bypass fatty acids in T1 group, 150 g of Tinospora powder in T2 group, and combination of 150 of bypass fatty acid and 150 g of Tinospora powder in T3 group over and above the standard feeding schedule was done for a duration of 90 days whereas standard feeding schedule was followed in T0 group. A significant (P < 0.05) increase in average daily milk yield was observed in T1 (10.06 ± 0.56 kg/d/h), T2 (10.30 ± 0.53 kg/d/h), and T3 (10.11 ± 0.48 kg/d/h) in comparison to control group (8.05 ± 0.38 kg/d/h). Significantly (P < 0.05) higher milk fat percent and total solids were also recorded in treatment groups over the control group. Other milk constituents (SNF, protein, lactose, ash) and milk properties (pH, conductivity, freezing point, density) remained unaffected by the supplementations. The somatic cell count values were significantly (P < 0.05) decreased in T2 and T3 with the advancement in the lactation in comparison to T0 and T1. Supplementation also leads to significantly (P < 0.05) higher MUFA and PUFA contents in milk of treatment group buffaloes in comparison to control group. The study outcomes state that combination of bypass fatty acids and Tinospora cordifolia supplementation improves milk production and its composition in lactating Murrah buffaloes.
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Elsayed DH, Abdelrazek HMA, El Nabtiti AAS, Mahmoud YK, Abd El-Hameed NE. Associations between metabolic profiles, post-partum delayed resumption of ovarian function and reproductive performance in Egyptian buffalo: Roles of IGF-1 and antioxidants. Anim Reprod Sci 2019; 208:106134. [PMID: 31405461 DOI: 10.1016/j.anireprosci.2019.106134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 07/04/2019] [Accepted: 07/19/2019] [Indexed: 11/29/2022]
Abstract
This study was conducted on 47 pluriparous pregnant Egyptian buffalo. Body condition score (BCS) was classified and blood samples were collected pre-partum and post-partum for estimation of IGF-1, hormonal, metabolic and antioxidants values. There was palpation per rectum and ultrasonography in addition to quantitation of progesterone (P4) and estradiol-17β (E-17β) for monitoring post-partum ovarian resumption. Reproductive indices were calculated 60, 90, 120 and 150 days post-partum. Based on the concentrations of P4 and E-17β, buffalo were divided into ovulatory and non-ovulatory groups. The P4 and E-17β were greater (P < 0.001) in ovulatory compared to non-ovulatory buffalo. The BCS and IGF-1 post-partum were greater (P = 0.024; 0.001, respectively) in ovulatory than non-ovulatory buffalo. Glucose and albumin were greater during pre- (P < 0.001; 0.013) and post-partum (P = 0.005; 0.003) periods in ovulatory than non-ovulatory buffalo. Post-partum, NEFA and BHBA concentrations were greater (P < 0.001) in non-ovulatory than ovulatory buffalo. The BUN concentrations were greater (P = 0.002) in non-ovulatory buffalo during pre- and post-partum periods. There were differences in GSH and SOD concentrations between groups (P < 0.001; 0.002, respectively). The BCS, albumin, IGF-1, GSH and SOD concentrations post-partum were negatively correlated with the delay of post-partum ovulation. The post-partum NEFA and BHBA concentrations, however, were positively correlated with delayed post-partum ovulation. Ovulatory buffalo had fewer (P < 0.01) days non-pregnant and for calving intervals as well as greater pregnancy rates than non-ovulatory buffalo. In conclusion, buffalo with delayed post-partum ovarian resumption were prone to have negative energy balance.
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Affiliation(s)
- Doaa H Elsayed
- Department of Theriogenology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Heba M A Abdelrazek
- Department of Physiology, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, 41522, Egypt.
| | - Adel A S El Nabtiti
- Department of Animal Wealth Development, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Yasmina K Mahmoud
- Department of Biochemistry, Faculty of Veterinary Medicine, Suez Canal University, Ismailia, Egypt
| | - Noura E Abd El-Hameed
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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Singh M, Roy A, Sharma S. Augmentation of Milk Production by Supplementing Bypass Fat in Dairy Animals. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/ajava.2015.476.488] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Silva G, Garcia A, Faturi C, Lourenço Junior J, Nahúm B, Gonçalves A, Kawhage P, Silva L, Meneses A. Adição de óleo de palma na dieta sobre a lipidemia e a qualidade do sêmen de bubalinos (Bubalus bubalis). ARQ BRAS MED VET ZOO 2014. [DOI: 10.1590/s0102-09352014000100022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
O estudo visou investigar o efeito da suplementação dietética com óleo de palma sobre o perfil sérico lipídico e as características seminais de touros bubalinos (Bubalus bubalis), bem como suas correlações. Doze touros foram alocados no Grupo CONT (n=5) ou Grupo ÓLEO (n=7) e receberam alimentação isoproteica composta por silagem de milho e concentrado (milho triturado, farelo de trigo e ureia), com proporção volumoso/concentrado de 50%, durante 130 dias (Períodos 1 e 2). Diferencialmente, óleo de palma foi adicionado ao concentrado (2% MS) do Grupo ÓLEO. Sêmen e sangue foram colhidos quinzenalmente. Houve aumento nas concentrações séricas de colesterol, HDL e lipídios totais nos animais do Grupo ÓLEO, enquanto o período influenciou nas taxas de colesterol, LDL, lipídios totais e VLDL (P<0,05). Houve decréscimo no turbilhonamento e discreta redução na integridade de membranas nos animais do Grupo ÓLEO (P<0,05). Correlações significativas foram encontradas entre triglicerídeos e defeitos menores (r=-0,412; P=0,006), LDL e defeitos totais (r=-0,333; P=0,030), lipídios totais e defeitos menores (r=-0.366; P= 0,017), lipídios totais e defeitos totais (r=-0.309; P= 0,046), e VLDL e viabilidade espermática (r=0,381; P=0,012), apontando efeitos positivos da maior lipidemia na morfologia e na viabilidade espermática. O uso de óleo de palma alterou o perfil lipídico sérico, mas não favoreceu per se os parâmetros seminais relacionados com o potencial de fertilidade dos touros.
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Affiliation(s)
| | | | - C. Faturi
- Universidade Federal Rural da Amazônia
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