Collections: 
0-9 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

3 > Image 3 of Kentucky farm and home science, vol. 6 No. 3 summer 1960

Part of Kentucky Agricultural Experiment Station

i ad. Blood Substance _ _ _ . , Identical tw1n cows used 111 `~A` A _ study to determine effect of adding l F E t materials into blood stream " I0II1 3 1Il a- g 2. V By DON DOWDEN and DON R. JACOBSON ruminants are absorbed to some extent as glucose *2* D"""""ll'" llf Dl'y Sl" and, to a much greater degree, as volatile fatty acids. l . . . _ _ The Substance either acetic Or Pmpiouic acid is Volatile fatty acids are {produced El the rumen fom ___ normally produced in the cows rumen a11d is ab- lh? brk`dOwn_f lbl;Y rites, {126 rilmeu ac` F sorbed into the blood stream as an energy source. term ODE pisslblwiy liwucbt el Gccmg cwtc} ~e Except for this observation, very little is known about may he will hllhd Cfniis lll lla amount" 0 i_ the processes through which food intake is regulated gluC0S_0r att?] acl S m tw OOD _ " in the dairy COW. Identical twin cows were employed in a study A _ , at the Kentucky Agricultural Experiment Station to l Factors such as kind of pasture, temperature, . s . . .. . . determine the efiect of adding several substances . water availability and stage of maturity all affect lll- _ _ . v . . . . directly 1nto the blood stream. Glucose, SO(l1ll]ll take but do little to explain how intake 1S regulated. . . . . . g ,_ . . . . . acetate, and acetic, propiomc, butyric, caproic and lac- " HOW thhshh ls Chhholhhl h hl Chhslhlslhhls llhhhlr is acids were i..-mi b - X, ance since economical animal productivity 1nay be _. . 1, ._ Hy . f ,. . , _ . dup to determine tien e ect upon consumption o = nnitec by the amounts and kinds of feed consumed. . cho 1 ned alfalfa ha . All of these substances, or -,, . . . . 1 l Y \V0rk with laboratory annnals has mdicated that metabolites are ,,0,.,],,,,1,, found in the blood of there ls =l lwllllg Chlsh lll lhs htm The lead- dairy Cows. In was ma one twin iecavai the _` , mg Center aY_ mcclve lSsa_g?S_ from other Parts metabolite under study in saline, and the other twin W _ of the body which cause it to initiate the act ofeeat- mceivd Saline Only. The injections were made fo,. ""' lug Oh Cause the amulal lh Seek food _At Other `mws 8 hours on each of 3 consecutive days. The amounts l _a lt may mum the animal lh qmt eatmg of hay consumed were obtained daily and for the A lllZ}.jOl` pO1`tlO1l of tl] diet of dairy COWS is IllB.Ll( 8-hOul injection PIiOdS_ up of carbohydrates. Carbohydrates in the diet of (C,,,,,,,,,,U,[ 0,, page 8) " V . . 2 l Il .B wa L _ . .:,_ r h _ ..;_ i _- .. ...... "m' =i '` ` j' . {V ` . Ai -V A. . . ,.,.._.,,,._. I '`'` " ``"` .;,., .V _' V _ 9-) ,,_v> W "__,,_gtg=i-=i;a1,,::,,;,.::,It .;,f n T, Y I _. ._ _ _ ` . _. _ ` _ . _ _ _.l { ; ._: 3 , ;. 3;;; IC C()\\ OI] [lll. Ilglli lh l(.(.CI\ Illg d(.(,[lL tl(,l( g H ii ...; 1 if-l ``h` '- 1 ii= Q V ...t in saline by constant drip into the blood , { i _i'" I if ..._.._, _,,_:, ,f' V stream at a rate approximately equal to that , _,,f _ *`: E l]()l`l]lillly absorbed into the blood stream , Q- , I , E ~ _ l l . ' after a heavy meal. 'I`hough [lll! cow is hun- 4* - = V ,,____, ll 2-};, ,_,_,_, _ v_ 4 _ gry, this material causes her to stop eating. A _y__1___i,_,, __ , . v ",!`~ ; m A " '*~i ~ M l iil _ _ -` W, The itlentieal twin malt: on (lll: lCi`l g0CS 011 ._.,_ .__,,,,_ ,_,_ ,_ lf, ii=- M ___, - "_ ,_j,;V, eating as though unbothered. She is receiv- U all `i*i'. gill ' -.. r `i_ to _. i P ` if ` A in r only saline. The 1ol tethvlene tubin r vis- . ,. N . i l {,4,..;; i f' , . 5 I ) fw , '; ` 5 C = ...` v _,== ._ '" * ible at the withcrs leads directly to the jugu- , .. A _ , ~ a tm ` . i .. l.;. e . im vein. KN . , i 2f E `V " -_a- ; > U - .-.i " . . .. . :L.i .l . ,- I ' A n .= . we :=- == . z. >4 - X., , J 'z ._ __ . _ _ V H g, { ` V _, ` '., ,-_ \ V V L`; nr t _ ... ; . ._i ._ i , , l * . 1 g . :3 ~ V .; fst ...~1**EA zi" ` Z l ` fl " .... , ,, r w _, , _ . . . ; Y ~ Q ;,;:..;}p\t__t iyttza _$, V 3 " I V *,4 -_ Hs sa, _. gsi sa F . . ,5 <"s:.;g,;" '_,. mt. _ . V _ _,_ , ,,,7, . ._ r. V