Four Angus steers (BW¼35073 kg) wit

Four Angus steers (BW¼35073 kg) with esophageal cannulae and four fitted with
ruminal cannulas (BW¼35175 kg) as well as fifteen steers of the same racial characteristics
(BW¼32072 kg), were used to evaluate seasonally across four years (2005–2009,
excluding 2007) the nutritive quality of diet and the blood metabolites and insulin levels
in grazing beef cattle a Chihuahuan desert rangeland. The diet consumed by grazing cattle
during spring and winter was low quality because of crude protein (CP) was less than
70 g/kg DM and neutral detergent fiber (NDF) higher than 720 g/kg DM. Initial washing
loss at time zero “A”, digestion rate “c”, effective degradability of NDF (EDNDF) and
CP (EDCP), potential gas production (PGP), ruminal ammonia–nitrogen (NH3N), total
volatile fatty acids (TVFA) propionate, butyrate, glucose (G), urea nitrogen (UN) and
insulin were highest in summer compared to spring (Po0.05). In contrast, ruminal
acetate concentrations and blood non-esterified fatty acids (NEFA) level were highest in
spring as compared to summer (Po0.05). It was concluded that season of grazing had
a marked influence on diet quality as well as in the blood metabolites and insulin levels in
grazing beef cattle a desert rangeland.

ผลลัพธ์ (อังกฤษ) 2:

Four Angus steers (BW¼35073 kg) with esophageal cannulae and Four fitted with
Ruminal cannulas (BW¼35175 kg) As well As Fifteen steers racial characteristics of the Same
(BW¼32072 kg), were used to evaluate seasonally Across Four years (2005-2009,
excluding 2007. ) Nutritive quality of the diet and the blood metabolites and insulin levels
in a Chihuahuan desert rangeland grazing cattle Beef. Consumed by the diet grazing cattle
during Spring and Winter was low quality because of Crude protein (CP) was Less than
70 G / kg DM and Neutral Detergent fiber (NDF) Higher than 720 G / kg DM. Initial washing
loss at time Zero "A", digestion rate "C", effective Degradability of NDF (EDNDF) and
CP (EDCP), potential gas Production (PGP), Ruminal ammonia-nitrogen (NH3N), total
volatile fatty acids (TVFA. ) propionate, butyrate, glucose (G), urea nitrogen (UN) and
insulin were highest in Summer compared to Spring (Po0.05). In contrast, Ruminal
acetate esterified fatty acids concentrations and blood non-(NEFA) level were highest in
Spring As compared to Summer (Po0.05). It was concluded that Season of grazing had
a marked influence on diet quality As well As in the blood metabolites and insulin levels in
a desert rangeland grazing cattle Beef.