Effect of Forage-Free Diet on the Growth Performance, Feed Efficiency, Blood Metabolites, and Mammary Gland Parenchyma of Prepubertal Holstein Heifers.

Variation in nutritional profile and availability of high-quality forages remain primary challenges for efficient heifer rearing on a forage-based diet. This study aimed to evaluate the effect of limit feeding forage-free diet on growth performance, feed efficiency, blood metabolites, behavior, health, and mammary parenchyma of prepubertal dairy heifers. Sixteen prepubertal heifers (Body weight = 168 ± 32Kg) divided into 8 pens (2 heifers/pen) were used in a completely randomized design (n = 4 pen/treatment) to compare the effect of a diet containing 20% forage with a forage-free diet.

Effect of breeding method and season on pregnancy rate and embryonic and fetal losses in lactating Nili-Ravi buffaloes.

The aim of this study was to determine the effect of breeding method and season on pregnancy rate and cumulative embryonic and fetal losses in Nili-Ravi buffalo. Estrus detection was performed twice a day by teaser buffalo bull for 1 hour each. A 2 × 2 factorial design was used to address the breeding method and season.

Effect of resynchronization with GnRH or progesterone (P4) intravaginal device (CIDR) on Day 23 after timed artificial insemination on cumulative pregnancy and embryonic losses in CIDR-GnRH synchronized Nili-Ravi buffaloes.

The objective of the present study was to determine the effect of resynchronization on Day 23 with either GnRH or P4 (controlled internal drug release device containing progesterone; CIDR) on pregnancy rate, cumulative pregnancy, and embryonic and fetal losses in CIDR-GnRH synchronized Nili-Ravi buffaloes. Buffaloes (n = 181) of mixed parity, lactating, 181 ± 73 days postpartum, a body condition score (BCS) of 3.2 ± 0.