Buscar
Mostrando ítems 11-20 de 54
Efecto de un sistema de enfriamiento conductivo estratégico sobre la tasa de preñez bajo un tratamiento modificado de OvSynch en ganado lechero bajo estrés por calor
(2015)
This study evaluated the effects of a strategic conductive cooling system (SCCS) on the pregnancy rate of dairy cattle in an ovulation synchronization program during two seasons, autumn and summer. Cows were distributed ...
Consumo y digestibilidad de una dieta para corderos basada en henos de gramíneas tropicales y de la invasora Hyparrhenia rufa al incorporarle un probiótico aportador de Bacillus subtilis y Bacillus licheniformis
(2013)
An experiment consisting of two periods (P1 and P2) was conducted to determine the effect of adding a probiotic of bacterial strains of Bacillus subtilis and B. licheniformis to a basal diet of low quality grass hays and ...
Caracterización reproductiva del ganado heterocigoto doble músculo en la raza senepol
(2016)
The Senepol cattle has a mutation in the myostatin gen (MSTN) which codifies for a high degree of skeletal muscle hypertrophy. However, thermoregulation, production, and reproduction related mechanisms need to be determined ...
Utilización de la harina de panapén (Artocarpus altilis) como sustituto parcial en dietas para cerdos en crecimiento
(2014)
Substitution of 0 and 10% of a commercial feed with breadfruit (Artocarpus altilis) meal in the diet for grower pigs was evaluated. Forty six pigs (23 females and 23 intact males) with an average initial weight of 26.5±1.1 ...
Genetic expression of HSP70, ATP1A1, NTRK1 and PRLR in the skin of slick hair Holstein cows
(2019-12-09)
The skin helps to regulate the core temperature of many organisms, including dairy cattle. Skin glands have been observed in dairy cattle with slick hair genotype which appears to improve their capacity to regulate core ...
Expression of pregnancy-specific beta-1-glycoprotein, aromatase and nitric oxide synthase in bovine sperm
(2014)
In the search for alternative indicators of fertility in bulls, this investigation evaluated the effects of breed, type of cattle and age, on the relative expression of the genes Aromatase, Pregnancy- Specific-Beta-1-Glycoprotein ...
Histological characteristics of skin from Puerto Rican slick-hair and wild type Holstein cows
(2017)
In Puerto Rico (PR), certain Holstein cattle had for some time been phenotypically identified with shorter than normal hair. Later it was learned that this variant in hair length and morphology is due to a cytosine deletion ...
Estudio de prevalencia de Trichinella spp. en producciones porcinas de la región oeste de Puerto Rico
(2014)
Trichinosis is a disease caused by a nematode of worldwide distribution that affects a wide range of hosts from carnivores, omnivores, and even there are some reports in birds and reptiles. However, disease is largely ...
Prevalencia de endometritis sub-clínica post-parto en tres hatos lecheros de Puerto Rico
(2014)
Reproductive efficiency in dairy herds is affected by environmental, genetic, management and health factors. Endometritis is one of the causes associated with low female reproductive efficiency. This study evaluated the ...
Características agronómicas y valor nutricional del gandul (Cajanus cajan (L.) Millsp. cv. Kaki) cosechado a diferentes edades de cortes
(2010)
This study was divided into three parts; the first to evaluate the effects of five stages of plant maturity (60, 75, 90,120 and 180 d), on the agronomic characteristics, chemical composition and in vitro degradability ...