Abstract #T496
Section: Small Ruminant
Session: Small Ruminant II
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Gatlin Ballroom
Session: Small Ruminant II
Format: Poster
Day/Time: Tuesday 7:30 AM–9:30 AM
Location: Gatlin Ballroom
# T496
Effect of supplementation with dried citrus pulp, urea, and DDGS on reproductive performance of goats.
Mayra A. Liñan Gonzalez1, Hugo Bernal Barragan*1, Fernando Sanchez Davila1, Rogelio A. Ledezma Torres1, Miguel Cervantes Ramirez2, Braulio Valles de la Mora3, 1Universidad Autonoma de Nuevo Leon, San Nicolas de los Garza, Nuevo Leon, Mexico, 2Universidad Autonoma de Baja California, Mexicali, Baja California, Mexico, 3Universidad Nacional Autonoma de Mexico, Martinez de la Torre, Veracruz, Mexico.
Key Words: goat, dried citrus pulp, dried distillers grains with solubles
Effect of supplementation with dried citrus pulp, urea, and DDGS on reproductive performance of goats.
Mayra A. Liñan Gonzalez1, Hugo Bernal Barragan*1, Fernando Sanchez Davila1, Rogelio A. Ledezma Torres1, Miguel Cervantes Ramirez2, Braulio Valles de la Mora3, 1Universidad Autonoma de Nuevo Leon, San Nicolas de los Garza, Nuevo Leon, Mexico, 2Universidad Autonoma de Baja California, Mexicali, Baja California, Mexico, 3Universidad Nacional Autonoma de Mexico, Martinez de la Torre, Veracruz, Mexico.
The objective of this study was to evaluate the effect of supplementation with 2 agroindustrial byproducts and urea, on body weight, serum glucose and BUN, as well as reproductive performance and blood progesterone of 56 goats of a commercial farm in Northeastern Mexico, grazing mixed thornscrub vegetation, including browse species, grass, forbs and Opuntia spp. (3.6 to 15.5% crude protein (CP) and 27.0 to 69.3% NDF), with daily access to shelter. Goats were blocked by breed (Nubian, Alpina and Saanen), age (1.5 to 2.5 years), parity (1 to 3), and body weight, and were randomly assigned among blocks either to T1: No supplementation; or to individually receiving 300 g/d of T2: dried citrus pulp (DCP, 4.9% CP, 20.0% NDF); or T3: DCP+Urea+DDGS (17.7% CP, 26.0% NDF); or T4: DCP+DDGS (15.4% CP, 29.2% NDF; n = 14 goats/treatment). Supplementation lasted 28 d in July–August 2014 (outside the natural breeding season). Beginning on d 13, a 9-d oestrus synchronization protocol was conducted applying 50 µg GnRH on d 13 and 22, and 75 µg PGF2α on d 20. Oestrus was observed utilizing teaser bucks, and goats were fixed-time transcervically inseminated 16 h after the second GnRH dose, using fresh processed and evaluated semen of 2 randomly assigned sires. Blood samples were collected by venipuncture of jugular vein on d 1, 6, 12, 20, 22 and 26. Glucose and BUN were colorimetrically analyzed. Progesterone was measured by ELISA. Results were analyzed by ANOVA and Chi-squared. Supplemented goats lost less BW (P < 0.05) than control animals. Serum glucose (42.3 ± 0.7 mg/dL) was similar (P > 0.05) among treatments. Goats in T1 and T4 had higher BUN values than T2 (mean 27.6 vs 25.2 mg/dL; P < 0.05). No differences were detected among treatments in oestrus appearance. Fertility rate of T2 and T3 (53 – 57%) was numerically better than in T1 and T4 (35 - 43%). Goats in T1 had on d 22 higher (P < 0.05) progesterone values than others. In conclusion, supplementing 300 g of DCP and DCP+Urea+DDGS during 28 d helped avoid loss of BW and improved fertility of goats.
Key Words: goat, dried citrus pulp, dried distillers grains with solubles
